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Lozano M, Charry P, de Pablo-Miró M, Salas MQ, Martínez C, Suárez-Lledó M, Fernández-Avilés F, Rovira M, Cid J. Role of extracorporeal photopheresis in the management of acute and chronic graft versus disease: current status. Bone Marrow Transplant 2024; 59:1209-1214. [PMID: 38961259 DOI: 10.1038/s41409-024-02360-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/19/2024] [Accepted: 06/20/2024] [Indexed: 07/05/2024]
Abstract
Extracorporeal photopheresis (ECP) is a therapy that combines the collection of mononuclear cells by apheresis, the addition of a photosensitizer (8-methoxisoralen), the illumination of the product with ultraviolet A light, and the immediate infusion of the product to the patient. Initially developed and approved to treat T-cell cutaneous lymphomas, soon started to be used to treat graft versus host disease (GvHD) developed after allogeneic hematopoietic-cell transplantation. The high response rate of ECP in skin, ocular, oral, pulmonary, and liver forms of chronic GvHD, the steroid-sparing effect, and the improved overall survival of treated patients, made ECP one of the second-line treatments used to treat steroid-resistant acute and chronic GVHD. Recently, the development of new drugs for treating GVHD has changed the position of ECP in the therapy of GVHD and has started to be used in combination with drugs for increasing the response rate to the treatment in severe or resistant forms of acute and chronic GVHD. ECP remains an essential therapeutic resource in the management of patients with refractory acute and chronic GVHD.
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Affiliation(s)
- Miquel Lozano
- Apheresis and Cellular Therapy Unit, Hemotherapy and Hemostasis Department, Institute of Cancer and Hematological Diseases, Hospital Clínic Universitari, Barcelona, Spain.
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.
- University of Barcelona, Barcelona, Spain.
| | - Paola Charry
- Apheresis and Cellular Therapy Unit, Hemotherapy and Hemostasis Department, Institute of Cancer and Hematological Diseases, Hospital Clínic Universitari, Barcelona, Spain
| | - Mar de Pablo-Miró
- Apheresis and Cellular Therapy Unit, Hemotherapy and Hemostasis Department, Institute of Cancer and Hematological Diseases, Hospital Clínic Universitari, Barcelona, Spain
| | - María-Queralt Salas
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Hematopoietic Transplantation Unit, Hematology Department, Institute of Cancer and Hematological Diseases, Hospital Clínic Universitari, Barcelona, Spain
| | - Carmen Martínez
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- University of Barcelona, Barcelona, Spain
- Hematopoietic Transplantation Unit, Hematology Department, Institute of Cancer and Hematological Diseases, Hospital Clínic Universitari, Barcelona, Spain
| | - María Suárez-Lledó
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Hematopoietic Transplantation Unit, Hematology Department, Institute of Cancer and Hematological Diseases, Hospital Clínic Universitari, Barcelona, Spain
| | - Francesc Fernández-Avilés
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- University of Barcelona, Barcelona, Spain
- Hematopoietic Transplantation Unit, Hematology Department, Institute of Cancer and Hematological Diseases, Hospital Clínic Universitari, Barcelona, Spain
| | - Montserrat Rovira
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- University of Barcelona, Barcelona, Spain
- Hematopoietic Transplantation Unit, Hematology Department, Institute of Cancer and Hematological Diseases, Hospital Clínic Universitari, Barcelona, Spain
| | - Joan Cid
- Apheresis and Cellular Therapy Unit, Hemotherapy and Hemostasis Department, Institute of Cancer and Hematological Diseases, Hospital Clínic Universitari, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- University of Barcelona, Barcelona, Spain
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2
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Del Fante C, Perotti C. Recent insights into extracorporeal photopheresis for graft-versus-host disease. Expert Rev Clin Immunol 2024; 20:339-348. [PMID: 38379258 DOI: 10.1080/1744666x.2023.2295405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 12/12/2023] [Indexed: 02/22/2024]
Abstract
INTRODUCTION Extracorporeal Photopheresis (ECP) may be considered the unique large-scale cell therapy currently available. It is currently employed mainly as second-line treatment, especially in steroid-resistant or steroid-dependent Graft versus Host Disease (GvHD) with good results and very few limitations. AREAS COVERED Many points need to be clarified regarding the ECP mechanism of action, that conditions the lack of uniqueness among the different centers, essentially cycle frequency, treatment duration, and the number of cells to be treated to obtain a response, according to the organs involved. Moreover, reliable biomarkers for prediction of response are lacking, as well as the best pharmacological combination. We will focus on the recent advances concerning ECP for GvHD treatment. We performed a systematic literature research in Pubmed and Embase as of September 2023. EXPERT OPINION The recent studies on ECP mechanism of action along with the promising biomarkers of response, and the synergistic benefit of ECP in association with the new drugs render this therapy an important weapon for GvHD resistant to conventional treatment and can be proposed as a valid first-line therapy option with promising results. We believe that it should be used early in all categories of patients, considering its high safety profile.
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Affiliation(s)
- Claudia Del Fante
- Immunohaematology and Transfusion Service, Fondazione Policlinico San Matteo, Pavia, Italy
| | - Cesare Perotti
- Immunohaematology and Transfusion Service, Fondazione Policlinico San Matteo, Pavia, Italy
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Asensi Cantó P, Sanz Caballer J, Sopeña Pell-Ilderton C, Solís Ruiz J, Lloret Madrid P, Villalba Montaner M, Facal Malvar A, Chorão P, Guerreiro M, Balaguer Roselló A, Montoro Gómez J, Santiago Balsera M, Solves Alcaína P, Sanz Alonso MÁ, De la Rubia Comos J, Gómez-Seguí I. Real-World Experience in Extracorporeal Photopheresis for Adults with Graft-versus-Host Disease. Transplant Cell Ther 2023; 29:765.e1-765.e8. [PMID: 37703997 DOI: 10.1016/j.jtct.2023.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 09/01/2023] [Accepted: 09/01/2023] [Indexed: 09/15/2023]
Abstract
Extracorporeal photopheresis (ECP) has shown efficacy in treating graft-versus-host disease (GVHD). We aim to summarize eight years of real-world experience with off-line ECP in our institution, in order to validate this treatment schedule and analyze predictive factors. All consecutive adult patients with steroid-dependent or steroid-refractory GVHD undergoing off-line ECP were included in this single-center retrospective study. ECP was performed with a Spectra Optia device, processing 1 total blood volume, at a twice-weekly frequency for acute GVHD (aGVHD) and once weekly for chronic GVHD (cGVHD), and tapered individually according to clinical response. The cumulative incidence of response, including complete response (CR) and partial response (PR), were compared among patients grouped by different baseline, apheresis, and disease characteristics. Between January 2015 and May 2022, a total of 1382 ECP procedures were proposed for 82 patients. No incidents were reported in 97% of the ECP sessions. GVHD responded in 78% of patients (aGVHD: 57% CR and 4% PR; cGVHD, 39% CR and 48% PR). Overall survival was statistically greater for aGVHD patients who responded to ECP compared to those who did not respond (67.5% versus 26% at 1 year; P = 0.037). Severity was an independent predictor of response in aGVHD, whereas the absence of mouth involvement and lower lymphocyte counts in the apheresis product correlated with a higher response in cGVHD. Our findings support the effectiveness of this treatment schedule for GVHD. Further investigation is required to identify ECP-specific predictive factors, given that findings are not homogeneous across studies.
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Affiliation(s)
- Pedro Asensi Cantó
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain.
| | - Jaime Sanz Caballer
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | | | - Jürgen Solís Ruiz
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - Pilar Lloret Madrid
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | | | - Ana Facal Malvar
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - Pedro Chorão
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - Manuel Guerreiro
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | | | - Juan Montoro Gómez
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | | | - Pilar Solves Alcaína
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain; CIBERONC, Instituto Salud Carlos III, Madrid, Spain
| | | | - Javier De la Rubia Comos
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain; CIBERONC, Instituto Salud Carlos III, Madrid, Spain; School of Medicine and Dentistry, Catholic University of Valencia, Valencia, Spain
| | - Inés Gómez-Seguí
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain; CIBERONC, Instituto Salud Carlos III, Madrid, Spain
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Hong J, Fraebel J, Yang Y, Tkacyk E, Kitko C, Kim TK. Understanding and treatment of cutaneous graft-versus-host-disease. Bone Marrow Transplant 2023; 58:1298-1313. [PMID: 37730800 DOI: 10.1038/s41409-023-02109-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 08/28/2023] [Accepted: 09/08/2023] [Indexed: 09/22/2023]
Abstract
The skin is the outermost mechanical barrier where dynamic immune reactions take place and is the most commonly affected site in both acute and chronic graft-versus-host disease (GVHD). If not properly treated, pain and pruritis resulting from cutaneous GVHD can increase the risk of secondary infection due to erosions, ulcerations, and damage of underlying tissues. Furthermore, resulting disfiguration can cause distress and significantly impact patients' quality of life. Thus, a deeper understanding of skin-specific findings of GVHD is needed. This review will highlight some promising results of recent pre-clinical studies on the pathophysiology of skin GVHD and summarize the diagnostic and staging/grading procedures according to the clinical manifestations of skin GVHD. In addition, we will summarize outcomes of various GVHD treatments, including skin-specific response rates.
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Affiliation(s)
- Junshik Hong
- Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
- Division of Hematology/Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Johnathan Fraebel
- Division of Hematology/Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Yenny Yang
- Division of Hematology/Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Eric Tkacyk
- Veterans Affairs Tennessee Valley Health Care, Nashville, TN, USA
- Department of Dermatology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Carrie Kitko
- Monroe Carell Jr Children's Hospital, Vanderbilt Division of Pediatric Hematology-Oncology, Nashville, TN, USA
- Vanderbilt-Ingram Cancer Center, Nashville, TN, USA
| | - Tae Kon Kim
- Division of Hematology/Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA.
- Veterans Affairs Tennessee Valley Health Care, Nashville, TN, USA.
- Vanderbilt-Ingram Cancer Center, Nashville, TN, USA.
- Vanderbilt Center for Immunobiology, Vanderbilt University Medical Center, Nashville, TN, USA.
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5
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Asensi Cantó P, Sanz Caballer J, Solves Alcaína P, de la Rubia Comos J, Gómez Seguí I. Extracorporeal Photopheresis in Graft-versus-Host Disease. Transplant Cell Ther 2023; 29:556-566. [PMID: 37419324 DOI: 10.1016/j.jtct.2023.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 06/29/2023] [Accepted: 07/03/2023] [Indexed: 07/09/2023]
Abstract
Graft-versus-host disease (GVHD) is a major cause of mortality and morbidity following allogeneic hematopoietic stem cell transplantation. Extracorporeal photopheresis (ECP), which exposes mononuclear cells to ultraviolet A irradiation in the presence of a photosensitizing agent, has shown efficacy in the treatment of GVHD. Recent observations in molecular and cell biology have revealed the mechanisms by which ECP can reverse GVHD, including lymphocyte apoptosis, differentiation of dendritic cells from circulating monocytes, and modification of the cytokine profile and T cell subpopulations. Technical innovations have made ECP accessible to a broader range of patients; however, logistical constraints may limit its use. In this review, we scrutinize the development of ECP from its origins to recent insights into the biology underlying ECP efficacy. We also review practical aspects that may complicate successful ECP treatment. Finally, we analyze how these theoretical concepts translate into clinical practice, summarizing the published experiences of leading research groups worldwide.
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Affiliation(s)
- Pedro Asensi Cantó
- Haematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain.
| | - Jaime Sanz Caballer
- Haematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - Pilar Solves Alcaína
- Haematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain; CIBERONC, Instituto Carlos III, Madrid, Spain
| | - Javier de la Rubia Comos
- Haematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain; School of Medicine and Dentistry, Catholic University of Valencia, Valencia, Spain
| | - Inés Gómez Seguí
- Haematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain; CIBERONC, Instituto Carlos III, Madrid, Spain
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Mayer W, Mayr J, Koch F, Rechberger U, Gasser W, Hermann M, Kempel A, Edlinger M, Schennach H. Increasing the collection flow rate to 2 mL/min is effective and reduces the procedure time in off-line photopheresis. Transfusion 2023; 63:1546-1553. [PMID: 37422880 DOI: 10.1111/trf.17469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 06/03/2023] [Accepted: 06/04/2023] [Indexed: 07/11/2023]
Abstract
BACKGROUND Extracorporeal photopheresis (ECP) treatment, mostly based on apheresis technology, is used for immunomodulation in various diseases such as cutaneous T-cell lymphoma, graft versus host disease and other (auto)immune disorders. The aim of this study was to collect high cell counts and purity in shorter procedure times using an ECP off-line system with an increased collection flow rate of 2 mL/min to a target volume of 200 mL buffy coat. STUDY DESIGN AND METHODS In this prospective study, data of routinely performed off-line photopheresis treatments were collected and analyzed at the Central Institute for Blood Transfusion & Department of Immunology (ZIB) of the Tirol Kliniken, to assess absolute cell counts and procedure times and to calculate collection efficiencies (CE2). RESULTS A total of 22 patients participated in this study. The processed blood volume was 4312 mL, the collection time 120 min, overall procedure time 157 min and the absolute cell counts of treated white blood cells (WBC) and mononuclear cells (MNC) were 5.0 and 4.3 × 109 respectively (median values). The calculated CE2 for WBC and MNC was 21.1% and 58.5%, the proportion of treated MNCs of the total number of MNCs present was 55.0%. CONCLUSION The data presented in this study show high therapeutically effective cell counts collected with a high MNC purity within a shorter overall collection/procedure time due to an increased collection flow rate.
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Affiliation(s)
- Wolfgang Mayer
- Central Institute for Blood Transfusion & Department of Immunology (ZIB), Tirol Kliniken GmbH, Innsbruck, Austria
| | - Jonas Mayr
- Central Institute for Blood Transfusion & Department of Immunology (ZIB), Tirol Kliniken GmbH, Innsbruck, Austria
| | - Felix Koch
- Central Institute for Blood Transfusion & Department of Immunology (ZIB), Tirol Kliniken GmbH, Innsbruck, Austria
| | - Ulrike Rechberger
- Central Institute for Blood Transfusion & Department of Immunology (ZIB), Tirol Kliniken GmbH, Innsbruck, Austria
| | - Werner Gasser
- Central Institute for Blood Transfusion & Department of Immunology (ZIB), Tirol Kliniken GmbH, Innsbruck, Austria
| | - Martin Hermann
- Department of Anesthesia and Intensive Care Medicine at the Medical University Innsbruck, Innsbruck, Austria
| | - Angela Kempel
- Pharmametrics GmbH, Institute for Health Economics & Epidemiology, Freiburg, Germany
| | - Michael Edlinger
- Institute of Medical Statistics and Informatics, Medical University Innsbruck, Innsbruck, Austria
| | - Harald Schennach
- Central Institute for Blood Transfusion & Department of Immunology (ZIB), Tirol Kliniken GmbH, Innsbruck, Austria
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7
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Lozano M, Cid J. How do we forecast tomorrows' transfusion: Non-transfusional hemotherapy. Transfus Clin Biol 2023; 30:282-286. [PMID: 36754141 DOI: 10.1016/j.tracli.2023.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 01/31/2023] [Indexed: 02/09/2023]
Abstract
Hemotherapy is the treatment of diseases by the use of blood or blood products from blood donation (by others of for oneself). It is clear that blood components transfusion represents the most important part of the activities of the professionals (doctors, nurses, technicians…) working in hemotherapy. But there are others forms of hemotherapy that are steadily growing, that we will discuss: plasma exchange, mononuclear cells collections for cellular therapies, extracorporeal photoapheresis, ABO antigen specific immunoadsorption and autologous platelet lysate.
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Affiliation(s)
- Miquel Lozano
- Apheresis and Cellular Therapy Unit. Department of Hemotherapy and Hemostasis, Clinic Institute of Hematology and Oncology, Hospital Clínic of Barcelona, IDIBAPS, University of Barcelona, Barcelona. Spain.
| | - Joan Cid
- Apheresis and Cellular Therapy Unit. Department of Hemotherapy and Hemostasis, Clinic Institute of Hematology and Oncology, Hospital Clínic of Barcelona, IDIBAPS, University of Barcelona, Barcelona. Spain
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Solh MM, Farnham C, Solomon SR, Bashey A, Morris LE, Holland HK, Zhang X. Extracorporeal photopheresis (ECP) improves overall survival in the treatment of steroid refractory acute graft-versus-host disease (SR aGvHD). Bone Marrow Transplant 2023; 58:168-174. [PMID: 36352015 DOI: 10.1038/s41409-022-01860-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/12/2022] [Accepted: 10/17/2022] [Indexed: 11/11/2022]
Abstract
Steroid refractory acute graft-versus-host disease (SR aGvHD) is a major limitation of successful allogeneic hematopoietic stem cell transplantation (HSCT). Extracorporeal photopheresis (ECP) has been used to treat SR aGvHD effectively and with low treatment related toxicity. In this study, we retrospectively analyzed the outcomes of 103 Steroid Refractory aGvHD (SR aGvHD) patients to identify factors associated with improved outcomes including the use of ECP. A total of 79 patients received ECP as part of their SR aGVHD treatment compared to 24 patients who did not. Both groups had similar aGVHD grade and maximum organ stage at onset of aGVHD and treatment initiation. Patients in the group that received ECP had better OS (p = 0.01), DFS (p = 0.008), lower relapse (p = 0.05) and similar NRM compared to the group that did not receive ECP. Patients that received ECP treatment also had shorter hospital stays in the first 180 days after onset of SR aGvHD (20 vs. 38 days, p = 0.03). Multivariable analysis for OS indicated patient CMV status (CMV+ versus CMV-, HR 2.34, CI 1.16-4.69), regimen intensity (Myelo vs. non-Myeloablative, HR 0.39, CI 0.20-0.75), and the use of ECP (ECP vs. no ECP, HR 0.39, CI 0.20-0.75) were associated with OS. In summary, the use of ECP in the treatment of SR aGvHD results in improved overall survival secondary to lower relapse rates compared to other therapeutic modalities that do not incorporate ECP.
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Affiliation(s)
- Melhem M Solh
- Blood and Marrow Transplant Program at Northside Hospital, Atlanta, GA, USA.
| | - Chloe Farnham
- Blood and Marrow Transplant Program at Northside Hospital, Atlanta, GA, USA
| | - Scott R Solomon
- Blood and Marrow Transplant Program at Northside Hospital, Atlanta, GA, USA
| | - Asad Bashey
- Blood and Marrow Transplant Program at Northside Hospital, Atlanta, GA, USA
| | - Lawrence E Morris
- Blood and Marrow Transplant Program at Northside Hospital, Atlanta, GA, USA
| | - H Kent Holland
- Blood and Marrow Transplant Program at Northside Hospital, Atlanta, GA, USA
| | - Xu Zhang
- Center for Clinical and Translational Sciences, University of Texas Health Science Center at Houston, Houston, TX, USA
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9
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Piñeiro GJ, Lazo-Rodriguez M, Ventura-Aguiar P, Ramirez-Bajo MJ, Banon-Maneus E, Lozano M, Cid J, Hierro-Garcia N, Cucchiari D, Revuelta I, Montagud-Marrahi E, Palou E, Bayés-Genís B, Campistol JM, Diekmann F, Rovira J. Extracorporeal Photopheresis Improves Graft Survival in a Full-Mismatch Rat Model of Kidney Transplantation. Transpl Int 2023; 36:10840. [PMID: 36713113 PMCID: PMC9876976 DOI: 10.3389/ti.2023.10840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 01/02/2023] [Indexed: 01/14/2023]
Abstract
Extracorporeal photopheresis (ECP) is an immunomodulatory therapy based on the infusion of autologous cellular products exposed to ultraviolet light (UV) in the presence of a photosensitizer. The study evaluates the ECP efficacy as induction therapy in a full-mismatch kidney transplant rat model. Dark Agouti to Lewis (DA-L) kidney transplant model has been established. ECP product was obtained from Lewis rat recipients after DA kidney graft transplantation (LewDA). Leukocytes of those LewDA rats were exposed to 8-methoxy psoralen, and illuminated with UV-A. The ECP doses assessed were 10 × 106 and 100 × 106 cells/time point. Lewis recipients received seven ECP infusions. DA-L model was characterized by the appearance of donor-specific antibodies (DSA) and kidney function deterioration from day three after kidney transplant. The dysfunction progressed rapidly until graft loss (6.1 ± 0.5 days). Tacrolimus at 0.25 mg/kg prolonged rat survival until 11.4 ± 0.7 days (p = 0.0004). In this context, the application of leukocytes from LewDA sensitized rats accelerated the rejection (8.7 ± 0.45, p = 0.0012), whereas ECP product at high dose extended kidney graft survival until 26.3 ± 7.3 days, reducing class I and II DSA in surviving rats. ECP treatment increases kidney graft survival in full-mismatch rat model of acute rejection and is a suitable immunomodulatory therapy to be explored in kidney transplantation.
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Affiliation(s)
- Gaston J. Piñeiro
- Department of Nephrology and Kidney Transplantation, Hospital Clinic de Barcelona, Barcelona, Spain,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Marta Lazo-Rodriguez
- Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Pedro Ventura-Aguiar
- Department of Nephrology and Kidney Transplantation, Hospital Clinic de Barcelona, Barcelona, Spain,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Maria J. Ramirez-Bajo
- Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,Red de Investigación Renal (REDINREN), Instituto de Salud Carlos III, Madrid, Spain
| | - Elisenda Banon-Maneus
- Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,Red de Investigación Renal (REDINREN), Instituto de Salud Carlos III, Madrid, Spain
| | - Miquel Lozano
- Apheresis Unit, Department of Hemotherapy and Hemostasis, IDIBAPS, Hospital Clinic de Barcelona, Barcelona, Spain
| | - Joan Cid
- Apheresis Unit, Department of Hemotherapy and Hemostasis, IDIBAPS, Hospital Clinic de Barcelona, Barcelona, Spain
| | - Natalia Hierro-Garcia
- Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,Red de Investigación Renal (REDINREN), Instituto de Salud Carlos III, Madrid, Spain
| | - David Cucchiari
- Department of Nephrology and Kidney Transplantation, Hospital Clinic de Barcelona, Barcelona, Spain,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Ignacio Revuelta
- Department of Nephrology and Kidney Transplantation, Hospital Clinic de Barcelona, Barcelona, Spain,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,Red de Investigación Renal (REDINREN), Instituto de Salud Carlos III, Madrid, Spain
| | - Enrique Montagud-Marrahi
- Department of Nephrology and Kidney Transplantation, Hospital Clinic de Barcelona, Barcelona, Spain,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Eduard Palou
- Department of Immunology, Hospital Clinic de Barcelona, Barcelona, Spain
| | - Beatriu Bayés-Genís
- Department of Nephrology and Kidney Transplantation, Hospital Clinic de Barcelona, Barcelona, Spain,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Josep M. Campistol
- Department of Nephrology and Kidney Transplantation, Hospital Clinic de Barcelona, Barcelona, Spain,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Fritz Diekmann
- Department of Nephrology and Kidney Transplantation, Hospital Clinic de Barcelona, Barcelona, Spain,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,Red de Investigación Renal (REDINREN), Instituto de Salud Carlos III, Madrid, Spain,*Correspondence: Fritz Diekmann, ; Jordi Rovira,
| | - Jordi Rovira
- Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain,*Correspondence: Fritz Diekmann, ; Jordi Rovira,
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10
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Asensi Cantó P, Sanz Caballer J, Fuentes Socorro C, Solves Alcaína P, Lloret Madrid P, Solís Ruíz J, Torres Guerola B, de la Rubia Comos J, Fernández Navarro JM, Gómez-Seguí I. Role of extracorporeal photopheresis in the management of children with graft-vs-host disease. J Clin Apher 2022; 37:573-583. [PMID: 36134700 DOI: 10.1002/jca.22012] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 07/24/2022] [Accepted: 08/19/2022] [Indexed: 11/09/2022]
Abstract
INTRODUCTION Graft-vs-host disease (GVHD) is a frequent cause of morbidity and mortality in allogeneic stem cell transplants. Extracorporeal photopheresis (ECP) is one of the most accepted second-line treatments, but technical issues of ECP in children might be prohibitive. MATERIALS AND METHODS Patients under 18 y of age with corticodependant or corticorefractory GVHD receiving ECP at our hospital were included in this retrospective study. ECP was performed with an in-line system (CellExTherakos) in 2013-2014 and with an off-line system (Spectra Optia) from 2015 onwards. Cumulative incidence curves were obtained to compare ECP efficacy among patients grouped by different baseline, apheresis, and disease characteristics. Significant variables on univariate analysis (Gray's test) were pooled into a multivariate analysis (Fine-Gray proportional hazard regression for competing events). RESULTS A total of 701 ECP sessions were performed on 33 patients between October 2013 and December 2021. In total, 97% of the sessions could be executed. In 8% of the sessions an incident was detected, most of them mild and related to catheter dysfunction. With a median follow-up for alive patients of 33.6 mo (range, 8-95), the composite partial and complete response cumulative incidence was 70% (95% confidence interval, 51%-82%) and the median time to maximal response was 2.8 mo (range, 0.25-9.8). Significantly lower response ratios were found in patients with hepatic, gastrointestinal, acute, or severe GVHD. The only variable that influenced response on multivariate analysis was GVHD severity. DISCUSSION ECP is feasible, safe, and effective for pediatric patients with corticorefractory or corticodependant GVHD, offering a less toxic and nonimmunosuppressive treatment option.
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Affiliation(s)
- Pedro Asensi Cantó
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - Jaime Sanz Caballer
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | | | - Pilar Solves Alcaína
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain.,CIBERONC, Instituto Carlos III, Madrid, Spain
| | - Pilar Lloret Madrid
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | - Jürgen Solís Ruíz
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain
| | | | - Javier de la Rubia Comos
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain.,CIBERONC, Instituto Carlos III, Madrid, Spain.,School of Medicine and Dentistry, Catholic University of Valencia, Valencia, Spain
| | | | - Ines Gómez-Seguí
- Hematology Department, Hospital Universitari i Politècnic La Fe, Valencia, Spain.,CIBERONC, Instituto Carlos III, Madrid, Spain
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11
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Piñeiro GJ, Montagud-Marrahi E, Ríos J, Ventura-Aguiar P, Cucchiari D, Revuelta I, Lozano M, Cid J, Cofan F, Esforzado N, Palou E, Oppenheimer F, Campistol JM, Bayés-Genís B, Rovira J, Diekmann F. Influence of Persistent Inflammation in Follow-Up Biopsies After Antibody-Mediated Rejection in Kidney Transplantation. Front Med (Lausanne) 2021; 8:761919. [PMID: 34869466 PMCID: PMC8632955 DOI: 10.3389/fmed.2021.761919] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/07/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Despite recent advances in immunosuppression treatment, antibody-mediated rejection (ABMR) remains the leading cause of kidney graft loss. Information about prognostic markers and the efficacy of treatment is scarce. Methods: Retrospective study with kidney recipients diagnosed an active ABMR from January 1, 2004 to December 31, 2019 to explore the influence of persistent inflammation in follow-up biopsies on graft survival after ABMR treatment. Results: About 116 patients were included. Active ABMR were treated with a combination of plasma exchange (PE), intravenous immunoglobulin (IVIg), rituximab, and steroids. At 6 months of treatment, 63 (54.3%) patients presented a stabilization or improvement in kidney-graft function. The effectiveness varied depending on the timepoint of the presentation between transplantation and rejection, which is lower for those with late ABMR (63 vs. 21% for early vs. late ABMR, respectively). Ninety patients (77%) underwent a control biopsy after ABMR treatment, from which 46 (51%) responded to the treatment. Microvascular inflammation (MVI) persisted in 64 (71%) biopsies, whereas tubulitis persisted in 17 (19%) biopsies. Death-censored graft survival at 1 year was significantly lower in patients with persistent MVI (86% vs. 95% without persistent MVI, P = 0.002), or with persistent tubulitis (44% vs. 66% without tubulitis, P = 0.02). In the Cox Regression analysis, the persistence of MVI [hazard ratio (HR), 4.50 (95%CI, 1.35–14.96), P = 0.01] and tubulitis [HR 2.88 95%CI (1.24–6.69), P = 0.01) in follow-up biopsies significantly increased the risk of graft failure. Conclusion: Persistent inflammation in follow-up biopsies after ABMR treatment was associated with an increased risk of graft loss, even without meeting Banff rejection criteria. Study Registration: Agencia Española de Medicamentos y Productos Sanitarios (AEMPS): 14566/RG 24161. Study code: UTRINM-2017-01.
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Affiliation(s)
- Gaston J Piñeiro
- Department of Nephrology and Kidney Transplantation, Hospital Clinic Barcelona, Barcelona, Spain.,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Enrique Montagud-Marrahi
- Department of Nephrology and Kidney Transplantation, Hospital Clinic Barcelona, Barcelona, Spain.,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - José Ríos
- Medical Statistics Platform, Institut d'Investigacions Biomques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Pedro Ventura-Aguiar
- Department of Nephrology and Kidney Transplantation, Hospital Clinic Barcelona, Barcelona, Spain.,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - David Cucchiari
- Department of Nephrology and Kidney Transplantation, Hospital Clinic Barcelona, Barcelona, Spain.,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Ignacio Revuelta
- Department of Nephrology and Kidney Transplantation, Hospital Clinic Barcelona, Barcelona, Spain.,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Miquel Lozano
- Apheresis Unit, Department of Hemotherapy and Hemostasis, Hospital Clínic de Barcelona, Universitat de Barcelona, Barcelona, Spain
| | - Joan Cid
- Apheresis Unit, Department of Hemotherapy and Hemostasis, Hospital Clínic de Barcelona, Universitat de Barcelona, Barcelona, Spain
| | - Frederic Cofan
- Department of Nephrology and Kidney Transplantation, Hospital Clinic Barcelona, Barcelona, Spain
| | - Nuria Esforzado
- Department of Nephrology and Kidney Transplantation, Hospital Clinic Barcelona, Barcelona, Spain
| | - Eduard Palou
- Department of Immunology, Hospital Clc de Barcelona, Universitat de Barcelona, Barcelona, Spain
| | - Federico Oppenheimer
- Department of Nephrology and Kidney Transplantation, Hospital Clinic Barcelona, Barcelona, Spain.,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Josep M Campistol
- Department of Nephrology and Kidney Transplantation, Hospital Clinic Barcelona, Barcelona, Spain.,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Red de Investigación Renal (REDINREN), Madrid, Spain
| | - Beatriu Bayés-Genís
- Department of Nephrology and Kidney Transplantation, Hospital Clinic Barcelona, Barcelona, Spain.,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Jordi Rovira
- Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Red de Investigación Renal (REDINREN), Madrid, Spain
| | - Fritz Diekmann
- Department of Nephrology and Kidney Transplantation, Hospital Clinic Barcelona, Barcelona, Spain.,Laboratori Experimental de Nefrologia i Trasplantament (LENIT), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Red de Investigación Renal (REDINREN), Madrid, Spain
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12
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Randomized phase II trial of extracorporeal phototherapy and steroids vs. steroids alone for newly diagnosed acute GVHD. Bone Marrow Transplant 2021; 56:1316-1324. [PMID: 33398094 DOI: 10.1038/s41409-020-01188-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 10/01/2020] [Accepted: 12/02/2020] [Indexed: 12/11/2022]
Abstract
Steroids remain the initial therapy for acute graft-vs.-host disease (AGVHD). Strategies to improve response and minimize steroid exposure are needed. We report results of a randomized, adaptive, Bayesian-designed, phase II trial of prednisone with or without extracorporeal photopheresis (ECP) as an initial therapy for patients with newly diagnosed AGVHD. The primary endpoint was success at day 56 defined as: alive, in remission, achieving AGVHD response without additional therapy, and on <1 mg/kg at day 28 and <0.5 mg/kg on day 56 of steroids. Eighty-one patients were randomized to the ECP arm (n = 51) or steroids alone (n = 30). Median age was 54 years (range: 17-75); 90% had grade II AGVHD and 10% had grades III and IV AGVHD, with skin (85%), upper (22%)/lower (22%) gastrointestinal, and liver (10%) involvement. The ECP arm had a higher probability of success (0.815) and exceeded the predefined threshold for determining the investigational arm promising. ECP was potentially more beneficial than steroids-alone in skin-only AGVHD (response rate: 72% vs. 57%, respectively) than for visceral-organ AGVHD (47% vs. 43%, respectively). The addition of ECP to steroids may result in higher GVHD response as initial therapy for AGVHD, especially for patients with skin-only involvement.
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13
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Radwanski K, Burgstaler E, Weitgenant J, Dale H, Heber C, Winters J. Pilot study of a new online extracorporeal photopheresis system in patients with steroid refractory or dependent chronic graft vs host disease. J Clin Apher 2020; 35:342-350. [PMID: 32640498 PMCID: PMC7496115 DOI: 10.1002/jca.21804] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 03/17/2020] [Accepted: 06/09/2020] [Indexed: 01/18/2023]
Abstract
BACKGROUND A new protocol has been developed on the Amicus Separator that enables the device to perform online extracorporeal photopheresis (ECP) procedures when used in conjunction with the Phelix photoactivation device and associated disposable kit. The objective of this study was to evaluate the safety and performance of the Amicus ECP System in adult subjects with steroid-refractory or dependent chronic graft vs host disease (cGVHD). STUDY DESIGN AND METHODS Eight subjects with mild to severe cGVHD underwent 31 procedures. Subject safety evaluations were performed pre and post procedure and adverse events (AEs) were recorded during treatment and 24 hours after the last procedure. In vitro evaluations of the treated cells included hematology counts and lymphocyte apoptosis, viability and proliferation as measures for ECP procedure validation. RESULTS For n = 23 evaluable procedures, median (range) procedure time was 88 (78-110) minutes, during which 2.9 (0.6-4.7) × 109 TNCs (approximately 90% MNCs) were treated and reinfused to the subjects. All subject safety evaluations (vitals, cell counts, plasma hemoglobin and bacterial and endotoxin testing) were within expected ranges. All device or procedure related AEs were mild in nature. After 24 hours in culture, 86 (52-98)% of treated lymphocytes were apoptotic compared to 27 (15-51)% in controls. Inhibition of lymphocyte proliferation was >91% in all procedures. CONCLUSION ECP procedures were safely completed in adult subjects with SR-cGVHD treated using the new online Amicus ECP system.
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Affiliation(s)
| | - Edwin Burgstaler
- Division of Transfusion Medicine, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Heather Dale
- Division of Transfusion Medicine, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Jeffrey Winters
- Division of Transfusion Medicine, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
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14
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Drexler B, Buser A, Infanti L, Stehle G, Halter J, Holbro A. Extracorporeal Photopheresis in Graft-versus-Host Disease. Transfus Med Hemother 2020; 47:214-225. [PMID: 32595426 DOI: 10.1159/000508169] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 04/21/2020] [Indexed: 12/16/2022] Open
Abstract
Background and Summary Extracorporeal photopheresis (ECP) is a leukapheresis-based procedure used in the therapy of acute and chronic graft-versus-host disease (aGvHD, cGvHD) and other diseases. Based on the substantial efficacy and the excellent safety profile in the absence of immunosuppression ECP has established itself as a major treatment form for steroid-refractory GvHD. Here we review the current literature on ECP as a treatment option for patients with aGvHD as well as cGvHD. Key Messages ECP is a well-established second-line therapy for cGvHD. Its role in the treatment of aGvHD is less clear but also points towards an effective second-line therapy option. In the future ECP could play a role in the prevention of GvHD. More experimental and randomized controlled trials are needed to define the best patient selection criteria, settings, and therapy regimens for GvHD.
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Affiliation(s)
- Beatrice Drexler
- Division of Hematology, University Hospital Basel, Basel, Switzerland.,Blood Transfusion Center, Swiss Red Cross, Basel, Switzerland
| | - Andreas Buser
- Division of Hematology, University Hospital Basel, Basel, Switzerland.,Blood Transfusion Center, Swiss Red Cross, Basel, Switzerland
| | - Laura Infanti
- Division of Hematology, University Hospital Basel, Basel, Switzerland.,Blood Transfusion Center, Swiss Red Cross, Basel, Switzerland
| | - Gregor Stehle
- Division of Hematology, University Hospital Basel, Basel, Switzerland.,Blood Transfusion Center, Swiss Red Cross, Basel, Switzerland
| | - Joerg Halter
- Division of Hematology, University Hospital Basel, Basel, Switzerland
| | - Andreas Holbro
- Division of Hematology, University Hospital Basel, Basel, Switzerland.,Blood Transfusion Center, Swiss Red Cross, Basel, Switzerland
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15
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Pamler I, Richter E, Hutchinson JA, Hähnel V, Holler E, Gessner A, Burkhardt R, Ahrens N. Bacterial contamination rates in extracorporeal photopheresis. Transfusion 2020; 60:1260-1266. [PMID: 32315092 DOI: 10.1111/trf.15801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/27/2020] [Accepted: 03/01/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND Extracorporeal photopheresis (ECP) is an immunosuppressive treatment that involves leukocyte apheresis, psoralen and UV light treatment, and subsequent reinfusion. Patients treated with ECP are usually immunosuppressed. Bacterial contamination therefore poses a much unwanted risk, but incidence data are lacking. PATIENTS AND METHODS We screened all 1922 consecutive ECP procedures scheduled within a roughly 3-year period for eligibility. Those with missing data on ECP method (inline or offline) or type of venous access (peripheral or central) were excluded. ECPs with complete aerobic and anaerobic microbial testing of baseline patient blood samples (n = 1637) and of ECP cell concentrates (n = 1814) were included in the analysis. RESULTS A test for microbial contamination was positive for 1.82% of the cell concentrates, with central venous access was the most significant risk factor for the contamination (odds ratio = 19). Patient blood samples were positive in 3.85% of cases, but no patients became septic. Staphylococcus spp. were most abundant, and products with bacterial contamination did not cause side effects after reinfusion. There were no significant differences in contamination rates between inline and offline ECP. CONCLUSION These findings stress the importance of sterile procedures and the benefits of using peripheral over central venous access for reducing the risk of bacterial contamination in ECP.
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Affiliation(s)
- Irene Pamler
- Institute for Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Regensburg,, Germany
| | - Eva Richter
- Institute for Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Regensburg,, Germany
| | - James A Hutchinson
- Department of Surgery, University Hospital Regensburg, Regensburg,, Germany
| | - Viola Hähnel
- Institute for Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Regensburg,, Germany
| | - Ernst Holler
- Department of Hematology and Oncology, University Hospital Regensburg, Regensburg,, Germany
| | - André Gessner
- Institute of Clinical Microbiology and Hygiene, University Hospital Regensburg, Regensburg,, Germany
| | - Ralph Burkhardt
- Institute for Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Regensburg,, Germany
| | - Norbert Ahrens
- Institute for Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Regensburg,, Germany.,Institute for Laboratory Diagnostics, Microbiology, and Transfusion Medicine, Sozialstiftung Bamberg, Germany
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